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Related to planum: planum sphenoidale


1. a flat surface determined by the position of three points in space.
2. an imaginary flat surface that divides the body into sections (see accompanying figure). adj., adj pla´nar.
3. a specified level, as the plane of anesthesia.
4. to rub away or abrade; see also planing and plastic surgery.
5. a superficial incision in the wall of a cavity or between tissue layers, especially in plastic surgery, made so that the precise point of entry into the cavity or between the layers can be determined.
Planes of section. Transverse, sagittal, and frontal planes of the body. From Applegate, 2000.
coronal p's frontal p's.
datum plane a given horizontal plane from which craniometric measurements are made.
frontal p's those planes passing longitudinally through the body, an organ, or a part, at right angles to the median plane and dividing into front and back portions. Called also coronal planes.
horizontal plane transverse plane.
median plane one passing longitudinally through the body, an organ, or a part from front to back, dividing it into right and left halves.
sagittal p's vertical planes through the body parallel to the median plane or the sagittal suture, dividing the body into unequal left and right portions.
transverse plane one passing horizontally through the body, an organ, or a part at right angles to the median and frontal planes, dividing it into upper and lower portions. Called also horizontal plane.
vertical plane one perpendicular to a horizontal plane, such as a sagittal plane, median plane, or frontal plane.


(plān), [TA]
1. A two-dimensional flat surface.
2. An imaginary surface formed by extension of a point through any axis or two definite points, in reference especially to craniometry and to pelvimetry.
Synonym(s): planum
[L. planus, flat]


/pla·num/ (pla´num) pl. pla´na   [L.] plane.


Temazepam, see there.


, pl. plana (plā'nŭm, -nă) [TA]
A plane or flat surface.
See also: plane
[L. plane]


pl. plana [L.] plane.

planum nasale
see nasal plane.
planum nasolabiale
the plate of moist, highly cornified epidermis, completely hairless, containing tubular merocrine glands around the nostrils and upper lip which is characteristic of the muzzle of cattle.
planum rostrale
the front plate of the muzzle of pigs; highly cornified epithelium, contains many tubular merocrine glands and a few fine hairs.

Patient discussion about planum

Q. what does the term flat affect means?

A. "Flat affect: A severe reduction in emotional expressiveness. People with depression and schizophrenia often show flat affect. A person with schizophrenia may not show the signs of normal emotion, perhaps may speak in a monotonous voice, have diminished facial expressions, and appear extremely apathetic. Also known as blunted affect." :)
couldn't said it better myself...:)

Q. Can flat feet be repaired by surgery? I have flat feet and I’m looking for all sorts of treatments for it- I heard there is a surgery for it- is it helpful?

A. As far as I know- they don’t treat flat feet that are asymptomatic. So first of all check if it bothers you. secondly there are 2 kinds of flat feet- rigid and flexible. There are different and treated differently. Not always a surgery (which is very painful and costly) is needed– I went to a Rolf method therapist by the advice of my orthopedic and it’s much better now. Ask an orthopedic.

Q. I think my son has flat foot, how to tell for sure? I didn't notice it before, he is 3 years old now and all shoes hurt him. Does it mean he has flat foot? what else can it be?

A. Pes planus (flat foot) is not a rare condition in toddlers, and may resolves spontaneously as the child grows. It is diagnosed clinically, i.e. by a doctor such as pediatrician or pediatric orthopedic surgeon, and radiographs are not universally indicated

More discussions about planum
References in periodicals archive ?
Erwahnt wird abermals die eigentumliche Wolbung des kompakten Ascheherds im Planum mit seinem Scheitelpunkt im Grenzbereich der Quadranten 12/i zu 12/j.
Melodi (beste) ve tekst (gufte)nin senkronize islenmesinde sol posterior planum temporale, senkronize sarki soylemede bilateral inferior pariyetal lobul anterior kismi ve sag posterior planum temporale, senkronize konusmada ise sol anguler girus aktive olmaktadir.
On Dec 1 the Arsia Mons evening cloud was joined by the other Tharsis Montes clouds at Ascraeus and Pavonis Mons, and Syria Planum.
The most striking feature identified in the sick mongooses was anorexia, followed by nasal distortion and, less commonly, erosions of the nasal planum with involvement of the hard palate.
3,4) These tumors most often arise from the sphenoid wing, but additional sites include clinoid, planum sphenoidale, frontoparietal area, and olfactory groove.
2004, In situ evidence for an ancient aqueous environment at Meridiani Planum, Mars: Science, v.
Unique to the human brain is a region within the planum temporale (itself situated in Wernicke's area, which is a larger locus associated with language comprehension).
Meningiomas in this region originate from the tuberculum sella, anterior clinoid processes, diaphragma sellae, planum sphenoidale and upper clivus (Figure 9).
Ueber Xanthoma multiplex planum, tuberosum, mollusciformis.
Endoscopic surgical procedure of cases Transsphenoidal pituitary surgery 60 Clivus biopsy 1 Anterior skull base CSF leaks 8 Endoscopic medial maxillectomy 9 for inverting papilloma Malignant melanoma 3 Angiofibroma 1 Ossifying fibroma 3 Sphenoid sinus angioma 1 Meningocele 1 Intranasal dermoid cyst 1 Orbital apex cyst 1 Optico-carotid recess fungal mass 4 Removal foreign body (bullet) 1 from planum sphenoidale
In 1968 Geschwind and his then student Walter Levitsky had shown in the general population that the planum temporale, comprising part of the auditory association cortex involved in linguistic functions, was large on the left and small on the right, perhaps explaining language lateralization to the left hemisphere.